[dpdk-dev] [PATCH v2 19/41] net/mlx5: add get MTU

[Srikanth Kaka]

MTU is retrieved by making an IOCTL call

Signed-off-by: Srikanth Kaka <srikanth.k at oneconvergence.com>
Signed-off-by: Vag Singh <vag.singh at oneconvergence.com>
Signed-off-by: Anand Thulasiram <avelu at juniper.net>
---
 drivers/net/mlx5/freebsd/mlx5_ethdev_os.c | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/drivers/net/mlx5/freebsd/mlx5_ethdev_os.c b/drivers/net/mlx5/freebsd/mlx5_ethdev_os.c
index 9aa38de649..b470c4ddec 100644
--- a/drivers/net/mlx5/freebsd/mlx5_ethdev_os.c
+++ b/drivers/net/mlx5/freebsd/mlx5_ethdev_os.c
@@ -96,6 +96,29 @@ mlx5_ifreq(const struct rte_eth_dev *dev, int req, struct ifreq *ifr)
 	return mlx5_ifreq_by_ifname(ifname, req, ifr);
 }
 
+/**
+ * Get device MTU.
+ *
+ * @param dev
+ *   Pointer to Ethernet device.
+ * @param[out] mtu
+ *   MTU value output buffer.
+ *
+ * @return
+ *   0 on success, a negative errno value otherwise and rte_errno is set.
+ */
+int
+mlx5_get_mtu(struct rte_eth_dev *dev, uint16_t *mtu)
+{
+	struct ifreq request;
+	int ret = mlx5_ifreq(dev, SIOCGIFMTU, &request);
+
+	if (ret)
+		return ret;
+	*mtu = request.ifr_mtu;
+	return 0;
+}
+
 /**
  * Get MAC address by querying netdevice.
  *
-- 
2.30.2